T540XXU4CYI1 – Galaxy Tab Active Pro firmware
Build T540XXU4CYI1 is a feature update for the Galaxy Tab Active Pro (SM-T540)
on Android 11 (One UI 3). It first appeared on Samsung's servers on Sep 28, 2025 (method) and has reached
1 region so far. It keeps bootloader bit 4, so downgrading to the previous build T540XXS4CWJ2 is still possible. Samsung still serves this file.
- Model
- SM-T540
- Android
- Android 11
- Type
- Feature
- Bootloader bit
- 4
- First released
- Sep 28, 2025
- Regions
- 1
Not yet released in 19 regions that are still on an older build: ATO, AUT, BTU, DBT, EUR, GTO, ITV, MXO, PHE, ROM, SIO, TPH, XAR, XEF and 5 more.
Rollout timeline by region
The date each region code (CSC) first received T540XXU4CYI1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
XJP | Japan | Sep 28, 2025 | day 0 | T540XXU4CYI1/T540OXM4CYI1/T540XXU4CYI1 |
Download and release notes
samloader download -m SM-T540 -r XJP -v T540XXU4CYI1/T540OXM4CYI1/T540XXU4CYI1Samsung's release notes and security patch level for this update: SM-T540 / XJP on doc.samsungmobile.com. What each part of the build number means: decode T540XXU4CYI1.